发明名称 |
A wireless microphone having a split-band audio companding system that provides improved noise reduction and sound quality |
摘要 |
<p>A wireless microphone having a split-band audio frequency companding system is disclosed. The companding system includes a compression circuit in which one amplification element is utilized in connection with a number of frequency bands. Each frequency band has a rectifier and filter element associated therewith. High-pass filter elements are utilized in the higher frequency bands of the compression and expander circuits to reduce the transfer of low-frequency signals to the rectifier elements that process the low-frequency signals, thereby reducing undesirable modulations of a variable resistance element associated therewith. <IMAGE></p> |
申请公布号 |
EP1217732(A2) |
申请公布日期 |
2002.06.26 |
申请号 |
EP20010309311 |
申请日期 |
2001.11.02 |
申请人 |
AUDIO-TECHNICA U.S., INC. |
发明人 |
STATHAM, KELLY |
分类号 |
H04R3/00;H03G9/02;H03M7/50;(IPC1-7):H03G9/02 |
主分类号 |
H04R3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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